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        * {
            margin: 0;
            padding: 0;
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        /* 去掉li a 无序列表前的圆点 */
        li {
            list-style: none;
        }

        .box {
            width: 248px;
            height: 163px;
            border: 1px solid #cccccc;
            margin: 100px auto;
            /* background-color: pink; */
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        .box h4 {
            font-weight: 400;
            height: 32px;
            line-height: 32px;
            border-bottom: 1px dotted #cccccc;
            padding-left: 15px;
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        .box ul li a {
            font-size: 12px;
            color: #666;
            text-decoration: none;

        }

        .box ul li a:hover {
            color: red;
            /* 鼠标经过有下划线 */
            text-decoration: underline;
        }

        .box ul li {
            height: 23px;
            padding-left: 15px;
        }

        .box ul {
            margin-top: 7px;
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